Okay kiddo, let me explain what an internal model means. Imagine you are playing a game and want to throw a ball at a target. Your brain knows how much force your arm needs to use to reach the target accurately because it has an internal model for motor control.
An internal model is like a map in your brain that tells you what you need to do to perform a certain action. It helps you to control your movements by predicting how your body will react to different situations.
When you throw a ball, your brain uses the internal model to predict where the ball will land based on the force you use. This model is based on your experiences of throwing and your previous practice. It is a learned tool that helps you to adjust your movements to achieve the desired outcome.
In summary, an internal model is like a map in your brain that helps you to control your movements by predicting how your body will react to different situations, based on your experience and practice.